Amplifier



FIG. 1 is a perspective view of an amplifier showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a left side view thereof.

FIG. 5 is a right side view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the drawings represent unclaimed portions ofthe amplifier and form no part of the claimed design.

CLAIM The ornamental design for an amplifier, as shown and described.